<!DOCTYPE html>
<html class="reftest-wait" style="background: green; display: none">
  <head>
    <script>
      window.addEventListener("MozReftestInvalidate",
        function() {
          var h = document.documentElement;
          h.style.display = "";
          h.className = "";
        }, false);
    </script>
  </head>
</html>
